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(No Model.) v 3 Sheets-Sheet l. C. B. CALLOGH & H. C. DELOROIX.

WOODWORKING MACHINERY.

3 Sheets-Sheet 2.

c. E. GALLOCH su 11. o. DBLCROIX. WODWORKING` MACHINERY.

(No Model.)

AN DREW H'VGIAKMJHGTDUTHaWASHI NGTDOLDL (No Model.)

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3o ing-shaft 7.

4o forward motion.

o less removed from the pivots 15.

UNITED STATES PATENT CEErcE.

CHARLES EMILE CALLOCH AND HENRI CHARLES DELCROIX, OF LA FLECHE, FRANCE.

WOODWORKING MACHINERY.

SPECIFICATION forming part of Letters Patent No. 548,517, dated October22, 1895.

Application filed January 8, 1895.

5 inthe Department of the Sarthe, France, have invented a newr anduseful Improvement in W'oodworking Machinery, of which the following isa specification.

This invention consists of an improved arro rangement of a compoundsaw-machine comprisin g a series of reciprocating blades oper ating withcompressed air, its object being to saw uncleft timber.

One form of the improved machine is rept5 resented, by way of example,in the accompanying drawings, in whichn Figure 1 is a side elevation ofthe machine. Fig` 2 is a front view thereof, and Fig. 3 is a sideelevation of the machine-frame and of zo the bevel-gearing.

The machine consists of a guiding-frame 1, within which is fittedanother frame 2 carrying the saw-blades. The frame 2 is operated by twoconnecting rods or links 3 also 2 5 arranged within the guide-frame, andone end of which is connected to the top cross-beam e of the frame 2,while the other end is linked to the trunnions or journals 5 of theflywheels 6, mounted on each end ot the driv- The driving-shaft 7 issecured to the legs of the supporting-frame in some machines, while inothers it is mounted upon a bed-plate to which the supporting-frame legsor standards are bolted. A driving-pulley 8,

consisting of two parts and strengthened or stifened so as to balancethe frame 2, is placed onto the central portion of the driving-shaft 7.

The machine carries four feeding cylinders or rollers 9 9 and 10 10,Fig. 2, which receive The motion is transmitted to the two lower rollers9 9 by means of a link 11, arranged on one side of the machine in such amanner that whenever the machine completes one revolution motion isimparted 4 5 to the gearing 12 12, which operates the two lower rollers9 9, thereby causing such rollers to perform a movement or stroke ofgreater or less extent, according as the slide 13, Fig. 1, to which isjointed the link 14, is more or The lower rollers 9 E) at the same timeconvey motion to Serial No. 534.242. (No model.)

the two upper rollers 10 10 by means of two vertical shafts 16 16, Fig.3, arranged on one side of the machine and connecting the upper rollerswith the lower rollers by means of beveled gearing. These two rollersmay be lowered or raised at will, according to the diameter of thetimber to be sawed, by means of two hand-wheels 17, fitted with a treblegearing, whereon are secured two weighted levers 18, which. may beshifted as required, so that they remain in the horizontal position andexercise snfticient pressure upon the rollers or cylinders to move alongthe timber. The timber is also supported by two carriages 19, providedwith hooks, one of which carriages is situated behind and the other infront of the machine, rails being provided for them to travel on.

The' machine is surmounted by a compressed-air cylinder 20, and havingits pistonrod 2l connected to the frame 2. The piston reciprocatin g insuch cylinder has for its object to take up or deaden the concussion andvibration resulting from the reciprocating motion of the blade-carryingtrarne and to enable the machine to revolve at a very high rate of speedwithout any such vibration or concussion. At each revolution of themachine the piston compresses air within both cylinder ends, theyielding resistance of the motor fluid serving to check the impact ot'the frame as it arrives at the dead-point, and thus assisting it inrecovering the same rate ot speed as before by expansion after it hasmoved past the said dead-point.

0n the left side of the cylinder 2O there is provided a large tap orcock 22, connecting the two ends of the said cylinder and intended to beused when the mechanism is beginning to operate. This tap should beturned on while the machine is being set in operation and closed as soonas the machine is fairly started. Upon the right side there are providedscrews 23, which serve to adj ust or control the pressure of thecompressedair necessary for the noiseless operation of the machine. Aseparate pressure-gage is provided at each cylinder end, so as toindicate the prevailing pressure of the compressed air on either sideand to enable it to be ascertained whether or not the pressure keepsequal as ICG the piston travels backward and forward. The number ofatmospheres of pressure requisite for the satisfactory operation of themachine depends upon the weight of the bladecarrying frame, the numberof saw-blades tted therein, and the number of revolutions which it isdesired that the machine should perform. The heavier the blade carryingframe, and the greater the desired number of revolutions, the more thepressure of the compressed air should be increased. This result isattained by closing as many of the air-inlets as may be necessary toinsure the silent operation ot' the machine. To reduce anabnormally-high rate of speed a safety-valve 24, placed upon thecylinder and communicating with both its ends, is used to restrain thepressure and to obviate a possible explosion in the cylinder, the factthat the rate of speed has become too high being notied by the noisyoperation of the machine the moment the said valve is raised from itsseat.

In the machine represented in the accompanying,r drawings thelegs of thesupportingframe rest upon amasonry bed direct; but in order tofacilitate the iitting and enable any operative (skilled or otherwise)to readily fit up the machine the legs ef the frame may be adapted to besecured to a metal bed-plate ot' predetermined size and shape andprovided with suitable perforations.

Having now particularly described and ascertained the nature of our saidinvention and in what manner the same is to be performed, We declarethat what We claim is- In a Wood-Working machine, the combination with asaw-carrying frame, of a shaft and crank connected to said frame by apitman, an air-compression cylinder closed at both ends and having itspiston connected to the frame, and a safety-valve having communicationWith both .ends of said cylinder, the latter being provided with aseries of screws placed in air outlets arranged at points equallyremoved from both ends of the cylinder, to regulate the escape ot airand the volum'e thereof which is compressed at each stroke of thepiston, substantially as described,

In testimony whereof We have signed this specification in the presenceof two subscribing witnesses.

CHARLES EMILE CALLOCH. HENRI CHARLES DELCROIX. Witnesses:

CLYDE SHROPSHIRE, W. YONE.

